# What is the size of INT?

## What is the size of INT?

4 bytes
Integer Types

Type Storage size Value range
int 2 or 4 bytes -32,768 to 32,767 or -2,147,483,648 to 2,147,483,647
unsigned int 2 or 4 bytes 0 to 65,535 or 0 to 4,294,967,295
short 2 bytes -32,768 to 32,767
unsigned short 2 bytes 0 to 65,535

Is int always 4 bytes?

Nowadays in most of compilers int is of 4 bytes. If you want to check what your compiler is using you can use sizeof(int) .

Is int always 32 bit?

int is always 32 bits wide. sizeof(T) represents the number of 8-bit bytes (octets) needed to store a variable of type T .

### How many digits can an int be?

The INTEGER data type stores whole numbers that range from -2,147,483,647 to 2,147,483,647 for 9 or 10 digits of precision. The number 2,147,483,648 is a reserved value and cannot be used.

Why is sizeof int 4?

So the reason why you are seeing an int as 4 bytes (32 bits), is because the code is compiled to be executed efficiently by a 32-bit CPU. If the same code were compiled for a 16-bit CPU the int may be 16 bits, and on a 64-bit CPU it may be 64 bits.

What is int * A in C?

A is some address of pointer variable. Int*a means we are dereferencing a to get the address of actual variable that is stored in pointer variable. And by *(int*a) means we are dereferencing above address to get actual value.

## Why int size is 2 or 4 bytes?

How big is a 4 byte integer?

INTEGER Value Ranges

Size Signed Values Unsigned Values
1-byte -128 to 127 0 to 255
2-byte -32,768 to 32,767 0 to 65,535
3-byte -8,388,608 to 8,388,607 0 to 16,777,215
4-byte -2,147,483,648 to 2,147,483,647 0 to 4,294,967,295

What is int 32bit?

Int32 is an immutable value type that represents signed integers with values that range from negative 2,147,483,648 (which is represented by the Int32. MinValue constant) through positive 2,147,483,647 (which is represented by the Int32.

### How long is a 32-bit int?

Integer, 32 Bit: Signed Integers ranging from -2,147,483,648 to +2,147,483,647.

What is an integer in math?

integer, whole-valued positive or negative number or 0. The integers are generated from the set of counting numbers 1, 2, 3,… and the operation of subtraction. When a counting number is subtracted from itself, the result is zero; for example, 4 − 4 = 0.

How big is a long long int?

A long int is a signed integral type that is at least 32 bits, while a long long or long long int is a signed integral type is at least 64 bits. This doesn’t necessarily mean that a long long is wider than a long . Many platforms / ABIs use the LP64 model – where long (and pointers) are 64 bits wide.

## What is the difference between size_t and unsigned int?

On a typical 64-bit system, the size_t will be 64-bit, but unsigned int will be 32 bit. So we cannot use them interchangeably. One standard recommendation is that the size_t be at most as big as an unsigned long.

What is the maximum value of an unsigned integer?

Modern computers almost universally use 2’s complement arithmetic, which means that a signed integer of n bits width has a minimum value of – (2^N-1) and a maximum value of (2^N-1)-1. Unsigned integers have a minimum value of 0 and a maximum value of 2^N-1. So the maximum unsigned integer values for 16 and 32 bit sizes are the numbers given above.

How many bits in an int?

An int is 4 bytes (32 bits), a double is 8 bytes (64 bits) so the total is 12 bytes. The value of the number does not affect how many bytes are written.

### What is the maximum size of an integer?

The size of an integer is platform-dependent, although a maximum value of about two billion is the usual value (that’s 32 bits signed). 64-bit platforms usually have a maximum value of about 9E18, except on Windows prior to PHP 7, where it was always 32 bit.